Change Picture: Improve discard button label.

The image that will be discarded can be either a photo or a video.

Bug: 793741
Change-Id: Ie26ebc793b945730142e93cfb0bd02aa20dabfd9
Reviewed-on: https://chromium-review.googlesource.com/820414Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: David Reveman <reveman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523220}

chrome/app/chromeos_strings.grdp

@@ -2286,8 +2286,8 @@
   <message name="IDS_OPTIONS_CHANGE_PICTURE_PHOTO_FROM_CAMERA" desc="The accessible text on the icon in the user image grid for a camera photo, when a photo has been captured.">
     Photo from internal camera
   </message>
-  <message name="IDS_OPTIONS_CHANGE_PICTURE_DISCARD_PHOTO" desc="The text on the button to discard the captured photo of the current user.">
-    Discard photo
+  <message name="IDS_OPTIONS_CHANGE_PICTURE_DISCARD_PHOTO" desc="The text on the button to discard the captured photo or video of the current user.">
+    Discard photo or video
   </message>
   <message name="IDS_OPTIONS_PHOTO_CAPTURE_ACCESSIBLE_TEXT" desc="The accessible message to speak to announce that a photo was captured.">
     Photo was captured

chrome/app/settings_strings.grdp

@@ -2978,8 +2978,8 @@
     <message name="IDS_SETTINGS_CHANGE_PICTURE_CAPTURE_VIDEO" desc="The text on the button to capture video of the current user.">
       Capture video
     </message>
-    <message name="IDS_SETTINGS_CHANGE_PICTURE_DISCARD_PHOTO" desc="The text on the button to discard the captured photo of the current user.">
-      Discard photo
+    <message name="IDS_SETTINGS_CHANGE_PICTURE_DISCARD_PHOTO" desc="The text on the button to discard the captured photo or video of the current user.">
+      Discard photo or video
     </message>
     <message name="IDS_SETTINGS_PHOTO_CAPTURE_ACCESSIBLE_TEXT" desc="The accessible message to speak to announce that a photo was captured.">
       Photo was captured